The document discusses the importance of teaching intonation patterns at the secondary level. It defines intonation as the pattern of changing pitch in speech and identifies its main functions as conveying grammatical information and attitude. The document outlines the main types of intonation patterns - falling and rising intonation - and their uses in statements, questions, exclamations and imperatives. It concludes by providing suggestions for effectively teaching intonation, such as ensuring students understand stress patterns and modeling correct intonation.